Physics- light

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  • Created by: emuppet
  • Created on: 17-05-14 18:28
What does light always travel in?
Straight lines.
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What does transparent mean?
Something that's see-through.
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What's the word for something that's not see-through?
opaque.
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Why do shadows form?
Because an object is blocking the light.
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Name some sources of light:
The sun, flames, light bulbs, glow worms! This is how light is produced.
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What about non-luminous objects?
Light reflects off them, and into our eyes, and that's how we see!
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How do you find 1 light year?
Speed of light times year.
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What can a ray of light do when it hits an object?
Reflect back, be absorbed or transmitted.
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What type of materials let all of the light through them?
Transparent.
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What type of material will scatter light as it tries to go through?
Translucent.
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Can light travel through opaque materials?
Nope.
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What does light travel at?
300 000 000ms.
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What does luminous mean?
Something that is bright and glowing and is giving off light.
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What are ray diagrams?
Light always travels in straight lines. This means that we can represent the rays with arrows. The direction of the arrow shows the direction of the light ray. Always use a ruler to draw them!
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Other cards in this set

Card 2

Front

What does transparent mean?

Back

Something that's see-through.

Card 3

Front

What's the word for something that's not see-through?

Back

Preview of the front of card 3

Card 4

Front

Why do shadows form?

Back

Preview of the front of card 4

Card 5

Front

Name some sources of light:

Back

Preview of the front of card 5
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